Featured Research

from universities, journals, and other organizations

Drugs From Sea Study Finds Sponge Health Link To Bacteria

Date:
July 4, 2001
Source:
University Of Maryland Biotechnology Institute
Summary:
In research aimed at finding natural compounds from the sea for drugs and other products, a team of scientists report in the journal Marine Biology on a bacterium that seems to be an indicator for health of a marine sponge.

BALTIMORE, Md. Calif. -- In research aimed at finding natural compounds from the sea for drugs and other products, a team of scientists report in the journal Marine Biology on a bacterium that seems to be an indicator for health of a marine sponge.

Related Articles


The team found that a type of sponge living along the Great Barrier Reef near Australia contains a "culturable" population of almost entirely one strain of bacteria, living in a close relationship with the porous sea animals but not in surrounding waters. There are also many "uncultured" bacteria in the sponge that scientists cannot yet grow.

"We have found that the culturable microbe population is very stable," reports Russell Hill of the University of Maryland Biotechnology Institute (UMBI). "The presence of this bacterium seems to be related to the health of the sponge and is a good model for our work." Some unhealthy specimens of the same type of sponge, Rhopaloeides odorabile, did not contain the bacterial strain, report Hill, a molecular microbiologist at UMBI's Center of Marine Biotechnology, and colleagues at the Australian Institute of Marine Science (AIMS).

Understanding the symbiosis of such microbes and sponges is a critical step in studying potential biologically active, possibly medicinal, compounds in such bacteria. Sponges are recognized as rich sources of new compounds with biologically active ingredients that could qualify as new medicinal drug candidates. In some cases the bioactive compounds are likely to come from bacteria rather than the sponges themselves..

A January 2001 study, published by the COMB/AIMS team, opened the possibility that bacteria living in marine sponges may be a rich source of future drugs. In the earlier study, they identified by gene sequencing studies that many of the uncultured bacteria from sponges surveyed were in a bacterial family Actinomycetes. For many decades, soil borne members of the microbe family have been the sources of 60 to 70 percent of today's naturally occurring antibiotics.

In the current study, the team has cultured several new actinomycetes in the laboratory for further studies. "Isolating the compound-producing microbes or its genes is obviously a much better approach than trying to harvest and grow sponges, which is extremely difficult," comments Hill.

The finding of the predominance of newly discovered bacterial strain (of the family, alpha Proteobacteria, very common to coastal waters) is also somewhat of a scientific departure. Previous cultivation studies of such bacterial-sponge associations showed that bacterial populations in sponges could be very diverse.

"This provides an excellent opportunity to assess temporal and geographic variations in this component of the community as well as variations between individual Rhopaloeides odorabile at a single location," Hill suggests. "The stability of microbial communities associated with sponges has not been study widely and has important implications for production of symbiont-derived bioactive compounds and for use of sponges as source materials for microbial diversity in programs screening for natural products. We think this shows that it is a true symbiont of this sponge."

The R. odorabiles sponge is common throughout the Great Barrier Reef region and reflects the typical ecological conditions. The team studied the microbes of the sponge collected from ten different areas of the coral reefs near Australia. The bacteria may play a role in food intake.

The scientists found that the microbes surrounding the sponge's food ingesting chambers, sort of a multiple mouth system of such animals. But they are not actually food for the sponge. Because they could not find the strain of bacterium in water around the sponges, the scientists say it likely the two have a specific and intimate relationship.

There is growing interest that in some cases the compounds are being synthesized by bacteria living on and in the sponges and playing roles in keeping the animals healthy and nourished.

The University of Maryland Biotechnology Institute was mandated by the state of Maryland legislature in 1985 as "a new paradigm of state economic development in biotech-related sciences." With five major research and education centers across Maryland, UMBI is dedicated to advancing the frontiers of biotechnology. The centers are the Center for Advanced Research in Biotechnology in Rockville; Center for Agricultural Biotechnology in College Park; and Center of Marine Biotechnology, Medical Biotechnology Center, and the Institute of Human Virology, all in Baltimore.


Story Source:

The above story is based on materials provided by University Of Maryland Biotechnology Institute. Note: Materials may be edited for content and length.


Cite This Page:

University Of Maryland Biotechnology Institute. "Drugs From Sea Study Finds Sponge Health Link To Bacteria." ScienceDaily. ScienceDaily, 4 July 2001. <www.sciencedaily.com/releases/2001/07/010704092820.htm>.
University Of Maryland Biotechnology Institute. (2001, July 4). Drugs From Sea Study Finds Sponge Health Link To Bacteria. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2001/07/010704092820.htm
University Of Maryland Biotechnology Institute. "Drugs From Sea Study Finds Sponge Health Link To Bacteria." ScienceDaily. www.sciencedaily.com/releases/2001/07/010704092820.htm (accessed December 20, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Saturday, December 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Researchers Test Colombian Village With High Alzheimer's Rates

Researchers Test Colombian Village With High Alzheimer's Rates

AFP (Dec. 19, 2014) In Yarumal, a village in N. Colombia, Alzheimer's has ravaged a disproportionately large number of families. A genetic "curse" that may pave the way for research on how to treat the disease that claims a new victim every four seconds. Duration: 02:42 Video provided by AFP
Powered by NewsLook.com
Monarch Butterflies Descend Upon Mexican Forest During Annual Migration

Monarch Butterflies Descend Upon Mexican Forest During Annual Migration

Reuters - Light News Video Online (Dec. 19, 2014) Millions of monarch butterflies begin to descend onto Mexico as part of their annual migration south. Rough Cut (no reporter narration) Video provided by Reuters
Powered by NewsLook.com
Birds Might Be Better Meteorologists Than Us

Birds Might Be Better Meteorologists Than Us

Newsy (Dec. 19, 2014) A new study suggests a certain type of bird was able to sense a tornado outbreak that moved through the U.S. a day before it hit. Video provided by Newsy
Powered by NewsLook.com
Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins